When uploading batches of photos oversized photos fail silently

[davidwillmore]

Summary:
When uploading a batch of photos as part of a gallery, some of which are larger than the maximum allowable, the photos under the maximum size upload successfully while the photos that are too large fail silently.

Steps to Reproduce:

1. On a post or page, click "Add Media" button
2. Click "Create Gallery" and "Upload Files"
3. Click "Select Files" and select several files, some of which are larger than the maximum allowable file size, and some which are smaller
4. Press select

Expected Results:
Either no files upload (as some are to large to upload) or the files small enough to upload upload successfully (as is the current case) and an error is displayed stating which photos cannot be uploaded and why.

Actual Results:
Only the photos that are small enough to be uploaded upload successfully while the photos that are too large fail to upload with no explanation, before, during, or after the upload process.

Browser:
Safari 6.0.2 on Mac OS

[davidwillmore]

Screen recording demonstrating behavior available here: ​https://vimeo.com/58756599

[SergeyBiryukov]

Related: #22869, #23127

[antpb]

This looks to be related to #22869 but the underlying issue seems to have been fixed in #22849. I was able to follow the replication the steps mentioned above and instead of silently failing it reports on the side bar under the upload progress bar which files failed to upload.

Closing this one out.